Definitions for backsplashˈbækˌsplæʃ
Random House Webster's College Dictionary
paneling, as that behind a kitchen countertop, to protect against splashed liquids.
Category: Common Vocabulary, Building Trades, Cooking
Origin of backsplash:
A vertical covering on a wall rising above a countertop or other work surface to protect the wall from spills and to decorate the wall.